J. F. Penn

When psychologist and religious expert Dr. Morgan Sierra's sister and niece are kidnapped, she's thrust into a deadly race against time to find twelve ancient stones that could unleash unimaginable power.

In mid-2020, I was not okay—and I didn't know how to find my way out of that darkness. But I could put one foot in front of the other until I figured it out....

Some things are not meant to be forgotten. An ancient timber circle emerges from a storm-lashed coast. A secret chamber is discovered beneath a Victorian zoo. A long-lost tomb of undead knights is unearthed beneath the streets of Paris. What happens when the buried and the drowned break free?

When ARKANE archivist Martin Klein joins the Vatican digital archiving project, he finds an ancient letter mistakenly scanned along with the medieval papal decree Militia Dei, Soldiers of God. It points to a dark secret the Knights Templar once tried to erase from existence....

When a man in a hospital gown jumps to his death from the Western Wall in Israel, the authorities think it’s just another victim of Jerusalem Syndrome: a religious psychosis triggered by a visit to the holy city.

An agent of Arkane, the British agency tasked with protecting the world from supernatural crises, Morgan knows that giving up the staff could spell the end of all things....

A relic, stolen from the heart of an ancient city. An echo of nationalist violence not seen since the dark days of the Second World War. Budapest, Hungary....

When a fragment of an ancient manuscript is stolen from a Jewish library in Amsterdam, ARKANE agents Morgan Sierra and Jake Timber discover a conspiracy that stretches back to the days of the Portuguese Empire, and a hidden Order of monks who have protected Eden for generations....

It is the seat of judgment. The pinnacle of holiness. It is the Ark of the Covenant… and it’s the most dangerous weapon in existence. A group of fanatics wearing masks of Egypt’s gods slaughter the curator of Cairo’s most famous museum.

When the mutilated corpse of a wealthy author is discovered, the police officer sent to investigate finds a curious diary amongst the occult objects at the scene. Will he uncover the author's secret at the ruined chapel? Plus two more short stories....

Evil stalks the city of London at night. Can Detective Jamie Brooke and reluctant psychic Blake Daniel stop the murders before it's too late....

Any wish can be granted: money, power…even death itself can be beaten back. All it takes is the blood of an angel. When a woman is crucified and burned alive in the center of New York City, Jake Timber is already on his way....

Conflict photographer, Sara Miles, loves being embedded with the military out in the desert. Her pictures pay tribute to those who fight, suffer, and die for freedom and the images she captures can turn public perception in the never-ending war....

Cass blows glass for a living. But when she's not cranking out tourist pieces to pay the bills, she creates unique glass art with the dream of winning a prestigious award that might change her life. But Cass has a problem. The heat and intensity of glassblowing have damaged her eyesight....

When a priceless relic disappears from Canterbury Cathedral, ARKANE - the agency tasked with protecting the world from supernatural adversaries - fears the worst…and sends its best. Now, ARKANE agents Morgan Sierra and Jake Timber are on the job....

A place written out of history. A world off the edge of the map. In this fantasy adventure trilogy, Sienna and the Mapwalker team must defend Earthside from the invasion of the Borderlanders and face their darkest challenge against the Shadow....

As natural disasters sweep Earthside, a mutant army rises in the Borderlands, driven by the dark force behind the Shadow Cartographers. Sienna and the Mapwalker team must use the Map of the Impossible to journey through the realm of the dead and face the nightmare at its heart....

When a fragment of a deadly map is recovered from a medieval plague pit in London, the Mapwalker team must cross over into the Borderlands, once more....

When her Grandfather is murdered under mysterious circumstances, Sienna Farren inherits his map shop in the ancient city of Bath, England. She discovers that her family is bound up with the Ministry of Maps, a mysterious agency....

Lara is part of a dive team exploring the sunken city of Thonis-Heraklion off the North coast of Egypt. When a storm threatens the site, there's only time for one last dive, and Lara is determined to be on it - even if it means diving with the man who threatened her this summer....